<?php

/**
 * This is the model class for table "qa_answers".
 *
 * The followings are the available columns in table 'qa_answers':
 * @property integer $questionId
 * @property integer $id
 * @property string $value
 */
class Answer extends QaActiveRecord {

	/**
	 * Returns the static model of the specified AR class.
	 * @param string $className active record class name.
	 * @return Answer the static model class
	 */
	public static function model($className = __CLASS__) {
		return parent::model($className);
	}

	/**
	 * @return string the associated database table name
	 */
	public function tableName() {
		return 'answers';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules() {
		// NOTE: you should only define rules for those attributes that
		// will receive user inputs.
		return array(
			array('value', 'required'),
			array('parentId', 'safe'),
			array('id, value, parentId', 'safe', 'on'=>'search'),
		);
	}

	/**
	 * @return array relational rules.
	 */
	public function relations() {
		// NOTE: you may need to adjust the relation name and the related
		// class name for the relations automatically generated below.
		return array(
			'creator'=>array(
				self::BELONGS_TO,
				Yii::app()->getModule('qa')->userClass,
				'createdBy'
			),
			'question'=>array(self::BELONGS_TO, 'Question', 'questionId'),
			'childs'=>array(
				self::HAS_MANY,
				'Answer',
				'parentId',
				'order'=>'createdAt',
			),
		);
	}

	/**
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels() {
		return array(
			'id'=>'ID',
			'value'=>'Answer',
		);
	}

	/**
	 * Retrieves a list of models based on the current search/filter conditions.
	 * @return CActiveDataProvider the data provider that can return the models based on the search/filter conditions.
	 */
	public function search() {
		// Warning: Please modify the following code to remove attributes that
		// should not be searched.

		$criteria = new CDbCriteria;

		$criteria->compare('id', $this->id);
		$criteria->compare('value', $this->value, true);

		return new CActiveDataProvider($this, array(
				'criteria'=>$criteria,
			));
	}

}